Celeb Hookups: Bristol Palin

"I gave birth to him naturally; without any pain medication and it was a long, arduous and difficult labour, but Orlando was with me the whole time supporting and guiding me through it,” Kerr wrote. “I could not have done it without him.”

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That the “Pirates of the Caribbean” star and Kerr had kept their baby news under wraps until now should come as no surprise.

The Hollywood pair kept the lid on the pregnancy for four months until Kerr broke the secret to Spanish Vogue.

2013 Celeb Baby Boom

After announcing their engagement in June, news of the couple’s underground nuptials a month later also only emerged when Kerr penned a statement explaining why she’d canceled a modeling gig.

On Tuesday, Kerr, 27, thanked her fans for sending “lovely thoughts.”

"We are so happy and are enjoying our time together as a family,” she wrote. “He is our little ray of sunshine.”